The DMK22 ARCA is our dedicated .22 LR semiautomatic rifle platform that has been fine tuned for precision sports competition. It features an Arca Swiss dovetail M-LOK® and an optics optimized top rail. – A modern new look has been applied across the entire DMK22 line with a redesigned upper receiver streamlined without the antiquated forward assist or dust cover. In a continuous effort to refine and optimize the internal functionality of the DMK22 platform the bolt has been lightened significantly and the same extractor from a Ruger 10/22 has been implemented allowing for better performance with lower velocity ammunition and more cross platform compatibility. – Features – Semi-Automatic – Direct Blowback – 4140 Chrome Moly Threaded Barrel with Black Nitride (QPQ) Finish – Patented Adaptor for 10/22 Barrel Compatibility – Full Metal Construction – MIL-Spec Buffer Tube – Patented Last Round Bolt Lock – 6 Position Adjustable Stock – KRISS Muzzle Break – AR-15 Aftermarket Furniture Compatibility – ARCA SWISS® M-LOK® Aluminum Modular Handguard – Caliber 22LR – Model DMK22C ARCA – Action Semi-Automatic – Operating System Direct Blowback – Barrel Length 16.0 In – Overall Length Collapsed 32.00 in / 812.80 mm – Overall Length Extended 35.25 in / 895.35 mm – Magazine(s) included (2) 25 Rounds – Color Black – Weight 6.9 lb / 3.1 kg – Barrel Material 4140 Chrome Moly – Barrel Finish Black Nitride (QPQ) – Twist Rate 1:16 RH – Trigger Type Single Stage – Stock 6 Position Adjustable Stock – What’s in the Box – (1) KRISS DMK22C Arca Firearm – (2) Magazine – (1) Cleaning Kit – (1) Cable Lock – (1) User Manual – (1) Warranty Card